How to improve the bulk density of refractory bricks

The bulk density of refractory bricks refers to the ratio of mass to volume after cooling at high temperature. The bulk density indicates the density of refractory bricks, which is one of the indicators to measure the quality of refractory bricks. The bulk density of refractory bricks affects the porosity, strength, erosion resistance, load softening temperature, abrasion resistance, thermal shock resistance of refractory bricks. The greater the bulk density, the strength of the refractory bricks, the resistance to erosion, the wear resistance, the better the softening temperature of the load, the longer the service life.

 

     The bricks of refractory bricks are made of refractory aggregates and binders of different particles. To form a dense structure, different sizes of particles are required to be filled with each other, mixed thoroughly in the mixing stage, and then added to a fixed size mold; Brick machine pressure and pressure to achieve the number of pressure accumulation; effectively improve the firing temperature and extend the insulation time, so that the chemical reaction of refractories can also improve the density. This is the way to improve the density of refractory bricks.

 

     In addition to the stereotypes of refractory bricks, there are unshaped refractories, such as refractory castables, refractory ramming material, etc., they have to increase the bulk density of the same method, of course, there are differences. Casting materials to increase the bulk density is also the need for different sizes of particles filled with each other, after the completion of casting, the use of vibration tools to vibrate, such as vibrating rods, vibrating plates, shaking tables, etc., through high-frequency vibration stress to fill the particles, So far. The baking of the pouring lining is also different from that of the refractory bricks. The refractory bricks are calcined by entering the high temperature zone after drying at 100-250 degrees, while the castable lining or product is achieved by slowly raising the temperature and removing the moisture in the material to achieve standard use performance.